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<H1>IBM Visualization Data Explorer Programmer&#39;s Reference</H1>
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<H3><A NAME="HDRDXIDX" HREF="progu097.htm#PToC_305">DXImportDX</A></H3>
<A NAME="IDX1814"></A>
<A NAME="IDX1815"></A>
<P><STRONG>Function</STRONG>
<P>
Imports data from a Data Explorer file.
<P><STRONG>Syntax</STRONG>
<BR>
<TT><STRONG><BR>
&#35;include &lt;dx/dx.h&gt;<BR>
<P><BR>
Object DXImportDX(char *filename, char **variable, int *start, int *end,<BR>
                  int *delta)<BR>
</STRONG></TT><BR>
<P><STRONG>Functional Details</STRONG>
<P>
Imports data from a Data Explorer file specified by the
<TT><STRONG>
filename
</STRONG></TT>
parameter.  The
<TT><STRONG>
variable
</STRONG></TT>
parameter specifies a
<TT><STRONG>NULL</STRONG></TT>-terminated
list of strings that identify which variables to import.  This
parameter identifies Objects in the file that have the names specified
by
<TT><STRONG>variable</STRONG></TT>.  If more than one
variable is specified, the Objects are collected
together and a Group is returned.
<P>
For Series data,
<TT><STRONG>
*start,
*end,
</STRONG></TT>
and
<TT><STRONG>
*delta
</STRONG></TT>
are used
to control which indexed Series members are read in.  If
<TT><STRONG>
start
</STRONG></TT>
is
<TT><STRONG>NULL</STRONG></TT>,
it defaults to the beginning of the series; if
<TT><STRONG>
end
</STRONG></TT>
is
<TT><STRONG>NULL</STRONG></TT>,
it
defaults to the end of the series; if
<TT><STRONG>
delta
</STRONG></TT>
is
<TT><STRONG>NULL</STRONG></TT>,
it defaults
to one.
<P>
For additional information on the Data Explorer file format,
see <A HREF="usrgu067.htm#HDRIMD">Appendix B. "Importing Data: File
Formats"</A>.
in <I>IBM Visualization Data Explorer User&#39;s Guide</I>.
<P><STRONG>Return Value</STRONG>
<P>
Returns a pointer to the Object or returns <TT><STRONG>NULL</STRONG></TT>
and sets an error code.
<P><STRONG>See Also</STRONG>
<P>
<TT><STRONG>
<A HREF="progu212.htm#HDRDXIHDF">DXImportHDF</A>,
<A HREF="progu213.htm#HDRDXINC">DXImportNetCDF</A>,

<A HREF="progu212.htm#HDRDXIHDF">DXImportHDF</A>,
<A HREF="progu210.htm#HDRDXICM">DXImportCM</A>,
<A HREF="progu209.htm#HDRDXICDF">DXImportCDF</A>

</STRONG></TT>
<P>
<A HREF="progu054.htm#HDRDEF">"Data Explorer Format Files"</A>.


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